Smoke-consumer.



UNITED STATES latented December 8, 1903.

PATENT OFFICE.

ANNIE K. WILKINS, OF PITTSBURG, PENNSYLVANIA, ADMINISTRATRIXOF HENRY WILKINS, DECEASED.

SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 746,426, dated December 8, 1903.

Application filed January 19, 1903. Serial No. 139.640. (No model.)

To all whom it may concern.-

Be it known that I, ANNIE K. WILKINS, a citizen of the United States, a'nd a resident of Pittsburg, in the county of'Allegh'eny and ject in view is the provision of means to supply a heated current of air and steam into the escaping products of combustion, to thereby effect the consumption of carbon in the smoke and to promote the combustion of the gases, to the end that fuel will be saved and more perfect combustion will be attained.

The improved device is situated in rear of the usual bridge-wall of the furnace, so as to be partially protected thereby from the bed of incandescent fuel on the grate, andsaid device is adapted to discharge the current in an upwardly and rearwardly inclined direction, so as to obtain an intimate commingling of the injected aerated mixture with the gaseous products of combustion.

The device may be used advantageously on steamships for ventilating the holds thereof by drawing out the foul or impure atmos-' tri'buting means consists of a distributing cylinder or shell 10, a combining and air-feeding tube 11, and an injector-pipe 12. The 05 casing or cylinder 10 extends across the flue or passage 9, and its end portions are supported in the side wall of the boiler-setting, as shown more clearly by Fig. 2. The ends of this cylinder'or casing are closed either by the provision of suitable heads or by the side walls of the setting, and this cylinder is provided with one or more slots 13. As shown by Fig. 1, the slot or slots 13*" open radially through the rear portion of the casing, so as to discharge the aerated mixture in an upward and rearward path, and thereby secure an intimate commingling of the steam and air with the gaseous products of combustion, an aerated mixture being injected into the escaping products of combustion substantially in the direction of the course pursued by said products of combustion.

The combining-tube 11 is of less diameter thanthe casing or cylinder 10, and this combining-tube is disposed in a concentric position within said cylinder, thus leaving a surrounding space or chamber between the tube and the cylinder. The combiningtube 11 is -not as long as the casing-10, and this tube has two open ends, which communicate with the opposite end portions of the distributingcasing. Within the combining-tube is arranged an injector-pipe 12, the latter being somewhat shorter than the combining-tube and arranged centrally therein. The injectortube is provided at itsend portions with nozzles 13, which lie within the open end portions of the combining-tube 11 and are arranged to face in opposite directions, so as to discharge IOO jets of steam through both ends of the combining-tubo.

Air is supplied to the combining-tube 11 by means of a pipe 14, which is shown by Fig. 2 as entering the lower part of the furnace and as having an upstanding branch 15, which passes through the middle portion of the casing and is united to the under side of the combining-tube 11 at a point between the open ends thereof. The end portion of the air-supply pipe 14 may terminate just outside of the boiler-setting in order that atmospheric air may flow through the pipe freely; but this end of the pipe 14 may be carried to any place from whence it is desired to draw the supply of airas for example, to the hold of a vessel.

Steam is conveyed to the injector-tube 12 by means of a pipe 16,which extends through the air-supply pipe 14 and is provided with an upstanding branch 17, the latter passing through the branch 15 of the air-pipe and coupled to the injector-tube 12 at a point between the nozzles 13 thereof. This steampipe is also provided with an upstanding branch 18, which is shown as having communication with the steam-drum of a boiler, and said branch pipe 18 is provided with a suitable cock or valve 19, which controls the passage of steam from the boiler to the injector-tube.

The described arrangement provides for the uniform distribution of the commingled air and steam into the end portions of the distributing-cylinder, and this commingled current is adapted to be heated before it is discharged into the escaping products of combustion.

Having thus described the invention,what is claimed as new, and desired to be secured by Letters Patent, is-- v In a smoke-consuming furnace, the combination of a casing provided with closed ends and with a rearwardly-facing outletopening, a combining-tube arranged centrally in said casing, said tube being open at its ends and terminating at points close to the closed ends of the casing, an air-pipe connected to and communicating with the middle portion of the combining-tube and extending through the casing, an injector-pipe disposed lengthwise within the combiningtube and having oppositely-facing jet-nozzles which lie within the open ends of said tube, and a steam-pressure pipe connected to the injector-tube at a point between the nozzles thereof, the arrangement being such that air passing into the combining-tube is caused to flow in two currents by the suction created by the jets emerging from the oppositelyfacing nozzles.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ANNIE K. WILKINS,

Administratrioc of the estate of Ife'm'y Wz'lkins, deceased. Witnesses:

JAMES HAMILTON, ALONZO O. PYLE. 

